When a child has a cold and fever, especially a high fever that does not go away, parents are very anxious and want to reduce the fever immediately, otherwise they do not trust the doctor. As a parent of a child, you always want your child to get well quickly; as a doctor, you also want to treat your own patients and heal them as fast as possible. So, we are all thinking about choosing the most effective medication, in addition to the most effective way to use the medicine. But there is a saying that “if you want to do it fast, you can’t do it fast”. There is a process of disease onset and recovery. If your doctor determines that you just have a cold, it is best not to rush to take antipyretic drugs if you can tolerate it. Fever is one of the body’s mechanisms to fight infection. Our body mobilizes its own defense system to kill foreign germs by raising the body temperature (germs generally die at 39°C or higher), thus shortening the duration of illness and enhancing the effectiveness of antibiotics. If you use drugs to reduce fever at the beginning of a cold (37-38.5°C), it will make the bacteria in your body become temporarily pseudo-dead and make them resistant to drugs, which is often more difficult to treat once they resurface. There are many causes of fever, and most fevers in infants and young children are infectious fevers caused by viruses, bacteria, mycoplasma and other pathogens, and the fevers that manifest when you have a cold, bronchitis, pneumonia, bacillary dysentery, enteritis, or urinary tract infection are all infectious fevers. The pathogens of infectious fever are not the same. If it is caused by bacteria or mycoplasma, appropriate antibacterial drugs can be used; if it is caused by virus, antibacterial drugs will not work either. In case of fever, the most important thing is to find out the disease causing the fever and determine which pathogen it is as much as possible in order to get the best treatment effect. Studies have shown that 90% of colds are caused by viruses. Therefore, it is important not to give a fever shot without identifying the cause of the fever. In the case of the most common cold, viruses multiply fastest at 37°C and die easily when the body has a high fever. Thus, it is clear that fever is a means for the body to fight against the virus. The use of antipyretic drugs may also have the following bad consequences: disturbing the heat pattern, causing the illusion of disease and delaying the diagnosis; sweating a lot, so that the loss of body fluids; suffering from enteritis, bacillary dysentery, it is easy to dehydration, such as fever and then use antipyretic drugs, more serious dehydration. According to foreign pediatricians, the use of antipyretic drugs in children can prolong the course of viral diseases. In infants and young children, because the neurological system is not fully developed, it is possible to take antipyretic tablets once in a while when they have a high fever in order to prevent high fever convulsions, but it is obviously more harmful than beneficial to take antipyretic drugs repeatedly or to give antipyretic injections because the fever does not subside. The accurate way to deal with a high fever emergency is to keep the child in bed and rest and drink more boiled water. It is best to give your child a light, easily digestible liquid food. In the active control system of infection, follow the doctor’s instructions to accurately choose antipyretic drugs, with physical cooling such as warm water baths, the temperature of the water 32-34 ° C is more appropriate, each wipe time of 10 minutes or more. It should be noted that when you have a high fever, do not use alcohol to rub your body. Because the alcohol evaporates too quickly, it may cause cramps. You can put a cool towel on your forehead. Some parents take their feverish babies to the hospital and wrap their children in three layers, and the doctors tell the parents to take off two pieces of clothing for their children immediately. Because, to the fever child wear too many clothes is not conducive to body temperature heat dissipation. Of course, the baby fever, parents do not need to make a fuss, but also can not be taken lightly, resulting in unmanageable condition. Baby fever pathological reasons can be large or small, serious sepsis, encephalitis meningitis, myocarditis, etc., not dealt with will lead to disability or death; light just a mild cold, ignore it will also be good on its own. However, it is difficult to judge the difference between the two if you are not a professional, and sometimes you have to use testing techniques to make a real difference. When a baby has a fever, the first thing to do is to use physical methods to lower the temperature, and if the temperature exceeds 38.5 ℃, only then use drugs to lower the temperature. In the use of drugs to lower the temperature at the same time, but also with physical cooling. At the same time, parents should learn to observe other manifestations of fever in children: such as rapid heartbeat, rapid breathing, feeling extremely uncomfortable, loss of appetite and general weakness, young babies do not talk, and even become agitated and crying. At this time, it is reasonable to handle moderately, so that the temperature is not too high, especially with a history of febrile convulsions or congenital heart disease infants and children, but also need to seek medical attention.